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A full-color electrochromic display

A technology of electrochromic and electrochromic materials, applied in the direction of color-changing fluorescent materials, instruments, chemical instruments and methods, etc., can solve the problems of insufficient colorful display, slow response speed and poor stability of electrochromic displays, and achieve faster response. Speed, solve the lack of colorful display, solve the effect of poor stability

Active Publication Date: 2017-10-24
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to solve the core technical problems such as slow response speed, insufficient colorful display and poor stability of electrochromic displays, and prepares composite polyaniline based on tungsten trioxide ( Electrochromic display device based on WO3 / PANI) film and viologen film

Method used

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  • A full-color electrochromic display
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  • A full-color electrochromic display

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The method for preparing a full chromatogram display by utilizing an electrochromic material is implemented according to the following steps:

[0036] (1) Mix 10mL of 0.01M sulfuric acid and 0.01mL of aniline, add ultra-pure water to 30mL, then add 10mL of 0.01M sodium tungstate and mix well as electrolyte. Using step voltage method (-0.6V and 0.6V each for 10s, cycle 3 times), using sodium tungstate as tungsten source, decompressed aniline as monomer, using three-electrode system, ITO as working electrode, platinum sheet As the counter electrode and Ag / AgCl as the reference electrode, a laminated WO3 / PANI film was prepared.

[0037] (2) Using methyl viologen as a raw material, a 0.1 mol / L solution was prepared, spin-coated twice at a speed of 500 r / min, and dried naturally to obtain a viologen film.

[0038] (3) On the basis of using propylene carbonate (PC) as an organic solvent and lithium perchlorate (LiClO4) as a lithium salt, prepare a 0.1mol / L LiClO4 / PC solution...

Embodiment 2

[0041] The method for preparing a full chromatogram display by utilizing an electrochromic material is implemented according to the following steps:

[0042] (1) Mix 10mL of 0.1M sulfuric acid and 0.2mL of aniline, add ultra-pure water to 30mL, then add 10mL of 0.1M sodium tungstate and mix well as electrolyte. Using step voltage method (-0.7V and 0.7V each for 20s, cycle 6 times), using sodium tungstate as tungsten source, decompressed aniline as monomer, using three-electrode system, ITO as working electrode, platinum sheet As the counter electrode and Ag / AgCl as the reference electrode, a laminated WO3 / PANI thin film was prepared.

[0043] (2) Using methyl viologen as a raw material, a 0.5 mol / L solution was prepared, spin-coated three times at a speed of 1000 r / min, and dried naturally to obtain a viologen film.

[0044] (3) On the basis of using propylene carbonate (PC) as an organic solvent and lithium perchlorate (LiClO4) as a lithium salt, prepare a 0.5mol / L LiClO4 / PC...

Embodiment 3

[0047] The method for preparing a full chromatogram display by utilizing an electrochromic material is implemented according to the following steps:

[0048] (1) Mix 10mL of 1M sulfuric acid and 0.5mL of aniline, add ultrapure water to 30mL, then add 10mL of 1M sodium tungstate to it and mix well as electrolyte. Using step voltage method (-0.8V and 0.8V each for 30s, cycle 10 times), using sodium tungstate as tungsten source, decompressed aniline as monomer, using three-electrode system, ITO as working electrode, platinum sheet As the counter electrode and Ag / AgCl as the reference electrode, a laminated WO3 / PANI thin film was prepared.

[0049] (2) Using methyl viologen as a raw material, a 1mol / L solution was prepared, spin-coated 4 times at a speed of 2000r / min, and dried naturally to obtain a viologen film.

[0050] (3) On the basis of using propylene carbonate (PC) as an organic solvent and lithium perchlorate (LiClO4) as a lithium salt, prepare a 1mol / L LiClO4 / PC solutio...

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Abstract

The invention relates to a full chromatography electrochromic displayer. An electrochromic material used by the full chromatography electrochromic displayer is made of a WO3 / PANI film and a viologen film through preparation; according to the technology of synthesis of an electrochromic film through electro-deposition, the technological process is green and environmentally friendly, operation is accurate and controllable, and the cost for preparation of the electrochromic film through a physical method is reduced. The full chromatography electrochromic displayer has the advantages that safety and effectiveness are achieved, energy is saved, the environment is protected, the service life is long, colors are diversified, and the full chromatography electrochromic displayer can be widely applied to multiple fields.

Description

technical field [0001] The invention belongs to the technical field of intelligent color-changing displays, and in particular relates to a full-chromatogram electrochromic display and a preparation method thereof. Background technique [0002] Human beings have always been interested in the phenomenon of color change. On the one hand, colors make human life more colorful; on the other hand, people use various colors as signs to convey information. Electrochromic materials are materials that change color under the action of an applied electric field or current. As a smart material, it can adjust its absorption of light in a wide range, and has the characteristics of low energy consumption, memory storage, and stable performance. Therefore, the application of electrochromic materials is in line with the sustainable development of the national economy and scientific development. Strategic requirements. In addition, with the gradual enhancement of people's awareness of energy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/15G02F1/153G02F1/155C09K9/02
CPCC09K9/02G02F1/1503
Inventor 赵九蓬曲慧颖李垚
Owner HARBIN INST OF TECH
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